PMID- 34953963 OWN - NLM STAT- MEDLINE DCOM- 20220316 LR - 20220531 IS - 1872-9754 (Electronic) IS - 0197-0186 (Linking) VI - 153 DP - 2022 Feb TI - Activation of vitamin D receptor inhibits Tau phosphorylation is associated with reduction of iron accumulation in APP/PS1 transgenic mice. PG - 105260 LID - S0197-0186(21)00306-5 [pii] LID - 10.1016/j.neuint.2021.105260 [doi] AB - Vitamin D deficiency and iron accumulation are prevalent in the brains of Alzheimer's disease (AD) patients, however, whether Vitamin D has a role in the regulations of iron metabolism in the condition of AD remains unknown. Our previous studies revealed that vitamin D deficiency promotes beta-amyloid (Abeta) deposition in the APP/PS1 mouse brains, while supplemented with a specific agonist of vitamin D receptor (VDR), paricalcitol (PAL), significantly reduced Abeta production via promoting the lysosomal degradation of beta-site APP cleavage enzyme 1 (BACE1). In this study, our data suggested that activation of VDR by PAL significantly reduced the iron accumulation in the cortex and hippocampus of APP/PS1 mice through downregulation of Transferrin receptor (TFR) by reducing iron-regulatory protein 2 (IRP2) expression. Furthermore, activation of VDR effectively reduced the phosphorylations of Tau at Ser396 and Thr181 sites via inhibiting the GSK3beta phosphorylation (Tyr216). Taken together, our data suggest that activation of VDR could inhibit the phosphorylations of Tau possibly by repressing the iron accumulation-induced upregulation of GSK3beta activity in the brains of APP/PS1 mice. Thus, activation of VDR may be an effective strategy for treating AD. CI - Copyright (c) 2021 Elsevier Ltd. All rights reserved. FAU - Wu, Ting-Yao AU - Wu TY AD - First Affiliated Hospital of Jinzhou Medical University, Jinzhou, 121000, China. Electronic address: llhfyg@163.com. FAU - Zhao, Ling-Xiao AU - Zhao LX AD - Institute of Health Sciences, Key Laboratory of Medical Cell Biology of Ministry of Education, China Medical University, Shenyang, 110122, China. FAU - Zhang, Yan-Hui AU - Zhang YH AD - Institute of Health Sciences, Key Laboratory of Medical Cell Biology of Ministry of Education, China Medical University, Shenyang, 110122, China. FAU - Fan, Yong-Gang AU - Fan YG AD - Institute of Health Sciences, Key Laboratory of Medical Cell Biology of Ministry of Education, China Medical University, Shenyang, 110122, China. Electronic address: ygfan@cmu.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20211222 PL - England TA - Neurochem Int JT - Neurochemistry international JID - 8006959 RN - 0 (Amyloid beta-Peptides) RN - 0 (Amyloid beta-Protein Precursor) RN - 0 (Presenilin-1) RN - 0 (Receptors, Calcitriol) RN - 0 (Vdr protein, mouse) RN - 0 (tau Proteins) RN - E1UOL152H7 (Iron) RN - EC 3.4.- (Amyloid Precursor Protein Secretases) RN - EC 3.4.23.- (Aspartic Acid Endopeptidases) SB - IM MH - *Alzheimer Disease/drug therapy/metabolism MH - Amyloid Precursor Protein Secretases/metabolism MH - Amyloid beta-Peptides/metabolism MH - Amyloid beta-Protein Precursor/genetics/metabolism MH - Animals MH - Aspartic Acid Endopeptidases MH - Humans MH - Iron MH - Mice MH - Mice, Transgenic MH - Phosphorylation MH - Presenilin-1/genetics MH - *Receptors, Calcitriol/metabolism MH - *tau Proteins/metabolism OTO - NOTNLM OT - Alzheimer's disease OT - Iron accumulation OT - Tau phosphorylation OT - Vitamin D receptor EDAT- 2021/12/27 06:00 MHDA- 2022/03/17 06:00 CRDT- 2021/12/26 20:34 PHST- 2021/09/13 00:00 [received] PHST- 2021/11/29 00:00 [revised] PHST- 2021/12/21 00:00 [accepted] PHST- 2021/12/27 06:00 [pubmed] PHST- 2022/03/17 06:00 [medline] PHST- 2021/12/26 20:34 [entrez] AID - S0197-0186(21)00306-5 [pii] AID - 10.1016/j.neuint.2021.105260 [doi] PST - ppublish SO - Neurochem Int. 2022 Feb;153:105260. doi: 10.1016/j.neuint.2021.105260. Epub 2021 Dec 22.